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Unread 04-11-2013, 08:29 AM   #1
davidmatlack
Registered User
1996 ZJ 
 
Join Date: Aug 2012
Location: rocky mount, nc
Posts: 131
VIC fuse blowing

96 gcl 5.2

Fuse 6 blew yesterday. VIC, Overhead VIC and turn signals out. Replaced fuse- blew in about 1 minute. Removed flasher relay still blew. Jeep is original to me with no mods.

Note- It only happens when I move the shifter to reverse while the Jeep is running.

Any idea's whats causing it?

Thanks

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Unread 04-12-2013, 07:28 PM   #2
KoreaZJ
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1994 ZJ 
 
Join Date: Aug 2011
Location: GANGNAM STYLE
Posts: 2,666
Check for a short to GND.
  1. Neutral Safety Switch (NSS) may be shorted. Check switch with connector removed. Center pin should be grounded only while in PARK or NEUTRAL. Outer pins should have continuity only in REVERSE, never shorted to ground.
  2. Neutral Safety Switch wiring may be shorted. Check for damaged/shorted wires at/near NSS.
  3. Reverse lamps/wiring may be shorted. Check bulbs, sockets, wiring, etc.
  4. Auto Day/Night mirror may be shorted. Unplug it.
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Unread 04-13-2013, 03:23 PM   #3
davidmatlack
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1996 ZJ 
 
Join Date: Aug 2012
Location: rocky mount, nc
Posts: 131
Spoke with jeep dealer who have been really good to my jeep for special problems. They are getting it next week. Initial thought is the PRND relay is bad. I guess this is on the side of the tranny. Does this make sense? I also replaced all the bulbs in the tail lights. One was blown but it was not a backup light. I'll pull the lights again to see if any of the new ones are blown.

Thanks for taking a shot at it
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Unread 04-14-2013, 02:27 AM   #4
KoreaZJ
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1994 ZJ 
 
Join Date: Aug 2011
Location: GANGNAM STYLE
Posts: 2,666
Quote:
Originally Posted by davidmatlack View Post
Spoke with jeep dealer who have been really good to my jeep for special problems. They are getting it next week. Initial thought is the PRND relay is bad. I guess this is on the side of the tranny. Does this make sense? I also replaced all the bulbs in the tail lights. One was blown but it was not a backup light. I'll pull the lights again to see if any of the new ones are blown.

Thanks for taking a shot at it
No relays on the side of the tranny. That's where the NSS is located, left side.

Quote:
Check for a short to GND.
  1. Neutral Safety Switch (NSS) may be shorted. Check switch with connector removed. Center pin should be grounded only while in PARK or NEUTRAL. Outer pins should have continuity only in REVERSE, never shorted to ground.
  2. Neutral Safety Switch wiring may be shorted. Check for damaged/shorted wires at/near NSS.
Location shown in diagram, inexpensive part, easy to replace.





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Unread 05-05-2013, 01:24 PM   #5
davidmatlack
Registered User
1996 ZJ 
 
Join Date: Aug 2012
Location: rocky mount, nc
Posts: 131
Found Problem

A wire for the backup rear light left side had chaffed against metal.
Remove spare tire
open plastic access plate
find and repair wire.

Done!
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